CN111831163B - Display panel and display device - Google Patents

Abstract

The invention provides a display panel and a display device, wherein the display panel is provided with a touch layer and comprises a main display area and a function additional area; the touch control layer is provided with openings corresponding to the function additional areas, and the light transmittance of the touch control layer corresponding to the function additional areas is larger than that of the touch control layer corresponding to the main display area. Through set up the trompil that corresponds with the additional district of function on the touch-control layer, confirm whether set up the touch-control line in the additional district department of function according to the area in the additional district of function simultaneously, when the area in the additional district of function is less, touch-control line is not set up in the trompil department of touch-control layer, when the area of trompil is great, utilize high transparent conductor material to form the touch-control line, make trompil department have the touch-control function, make the additional district of function both can be used for showing photosensitive element such as image and installation camera, possess the touch-control function again, improve user experience.

Description

Display panel and display device

Technical Field

The invention relates to the technical field of display, in particular to a display panel and a display device.

Background

In the design of the OLED display panel, it has been a difficult problem to implement a lower-screen camera and transparent display of the OLED display panel, and how to improve the light transmittance of the panel is the most important difficult problem to implement the transparent display and the lower-screen camera. At present, the touch layer has a great influence on the transmission of light, so that the photographing and imaging of photosensitive elements such as a camera under a screen can be influenced, and the corresponding area of the camera cannot be simultaneously provided with a touch function and a light transmission function.

Disclosure of Invention

The invention provides a display panel and a display device, and aims to solve the technical problem that due to the fact that a touch layer has a large influence on light transmission, photographing and imaging of photosensitive elements such as a camera under a screen are influenced, and the corresponding area of the camera is difficult to achieve the touch function and the light transmission function.

In order to solve the above problems, the technical scheme provided by the invention is as follows:

a display panel is provided with a touch layer and comprises a main display area and a function additional area;

the touch control layer is provided with openings corresponding to the function additional areas, and the light transmittance of the touch control layer corresponding to the function additional areas is larger than that of the touch control layer corresponding to the main display area.

Furthermore, no touch wiring is arranged in the open hole of the touch layer.

Further, the touch layer includes a first metal layer and a second metal layer located at a different layer from the first metal layer;

the first metal layer comprises first touch control lines arranged along a first direction and second touch control lines arranged along a second direction, the first touch control lines are arranged along the second direction and are insulated from each other, and the second touch control lines are arranged along the first direction and are insulated from each other; each first touch line comprises a plurality of first electrodes arranged along a first direction, each second touch line comprises a plurality of second electrodes arranged along a second direction, and the first electrodes and the second electrodes are insulated from each other;

the second metal layer comprises an electrode bridge; in each first touch line, two adjacent first electrodes are electrically connected through the electrode bridge; in each second touch line, two adjacent second electrodes are electrically connected through an electrode connecting line, and the electrode bridge is positioned outside the opening.

Further, the maximum width of the opening is smaller than the distance between two adjacent electrodes across the bridge.

Furthermore, the opening is located in an area surrounded by a first electrode bridging bridge, a second electrode bridging bridge, a third electrode bridging bridge and a fourth electrode bridging bridge in the plurality of electrode bridging bridges;

the second electrode bridging bridge is adjacent to the first electrode bridging bridge and located on the side of the first electrode bridging bridge along the first direction, the third electrode bridging bridge is adjacent to the first electrode bridging bridge and located on the side of the first electrode bridging bridge along the second direction, and the fourth electrode bridging bridge is simultaneously adjacent to the second electrode bridging bridge and the third electrode bridging bridge.

Further, a first compensation electrode is electrically connected to the first electrode adjacent to the opening in the plurality of first electrodes, and the first compensation electrode is arranged along the outer edge of the opening; a second compensation electrode is electrically connected to the second electrode adjacent to the opening hole, and is arranged along the outer edge of the opening hole;

wherein, the distance from the center of the first electrode adjacent to the opening to the center of the opening is positively correlated with the area of the first compensation electrode, and the distance from the center of the second electrode adjacent to the opening to the center of the opening is positively correlated with the area of the second compensation electrode.

Further, the first compensation electrode and the second compensation electrode are both arranged on the same layer as the first metal layer, the first metal layer is in a grid shape, and the first compensation electrode and the second compensation electrode are in a grid shape.

Further, when the area of the opening of the touch layer is less than or equal to 4 square millimeters, no touch trace is disposed in the opening of the touch layer.

Furthermore, when the diameter of the opening of the touch layer is smaller than or equal to 2 mm, no touch trace is arranged in the opening of the touch layer.

Furthermore, the shape of the opening of the touch layer is circular, large semicircular or small semicircular.

Furthermore, a touch wire formed by a transparent conductor material is arranged in the opening of the touch layer.

Further, the touch trace is electrically connected to the touch layer.

Furthermore, a first driving circuit and a signal wire are arranged on the peripheral side of the function additional area, a first anode used for driving the first pixel is arranged in the function additional area, and the first driving circuit is electrically connected with the first anode through a transparent wire.

Furthermore, a plurality of pixel driving circuit islands are arranged on the peripheral side of the function additional area, a first group of pixel driving circuit islands in the pixel driving circuit islands comprise a plurality of first driving circuits, the signal routing comprises a plurality of first signal lines and a plurality of second signal lines, and the first signal lines and the second signal lines are electrically connected with the first driving circuits.

Further, each of the first signal lines includes a first detour segment, each of the second signal lines includes a second detour segment, the first detour segments and the second detour segments are located at different layers, the first detour segments of the plurality of first signal lines are disposed at an edge of the function addition region, and the second detour segments of the plurality of second signal lines are disposed at an edge of the function addition region.

The invention also provides a display device which comprises the display panel and a functional device arranged corresponding to the function addition area of the display panel.

The invention has the beneficial effects that: through getting rid of the touch-control layer and the part that additional function district department corresponds, avoid the touch-control layer to influence the shooting and the formation of image of photosensitive element such as camera, confirm whether set up the touch-control line in additional district department of function according to the area in additional district of function simultaneously, when the area in additional district of function is great, utilize high transparent conductor material to form the touch-control and walk the line for additional district of function both can be used for showing images and installing photosensitive element such as camera, possesses the touch-control function again, improves user experience.

Drawings

In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a display panel according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a touch layer according to an embodiment of the invention;

fig. 3 is a schematic view of a touch layer and a touch trace according to another embodiment of the invention;

FIG. 4 is a schematic view of the functional addition region of the present invention in a large semicircular shape;

FIG. 5 is a schematic view of the functional addition region of the present invention in a small semicircular shape;

fig. 6 and fig. 7 are schematic layout diagrams of a driving circuit and signal traces according to an embodiment of the present invention;

fig. 8 and 9 are schematic layout diagrams of a driving circuit and signal traces according to another embodiment of the present invention;

fig. 10 and fig. 11 are schematic layout diagrams of a driving circuit and signal traces according to another embodiment of the present invention;

FIG. 12 is a schematic view of a display panel according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of the structures of a first metal layer and a second metal layer according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a touch layer according to an embodiment of the invention;

FIG. 15 is a partial schematic structural diagram of a connection relationship between a first electrode and a first compensation electrode according to an embodiment of the present invention;

FIG. 16 is a partial structural diagram illustrating a connection relationship between a second electrode and a second compensation electrode according to an embodiment of the present invention;

fig. 17 is a schematic structural view of a display device according to the present invention.

Reference numerals:

10. a display panel; 11. a main display area; 111. a second pixel; 1111. a second anode; 1112. a second drive circuit; 12. a function addition area; 121. a first pixel; 1211. a first drive circuit; 1212. a first anode; 21. a first sector; 22. a second sector; 30. a pixel drive circuit island; 41. a first signal line; 411. a first straight line segment; 412. a first transition section; 413. a first roundabout segment; 42. a second signal line; 421. a second straight line segment; 422. a second transition section; 423. a second circuitous segment; 50. a substrate; 61. a first insulating layer; 62. a second insulating layer; 63. a third insulating layer; 64. a fourth insulating layer; 71. a first lapping trace; 72. a second lapping wire; 73. a third lapping wire; 80. a pixel defining layer; 81. a pixel opening; 90. a touch layer; 91. opening a hole; 92. a buffer layer; 93. a first metal layer; 931. a first electrode; 932. a second electrode; 933. connecting the electrodes; 934. a first edge electrode; 935. a first spacer region; 936. a second edge electrode; 937. a second spacer region; 94. a passivation layer; 95. a second metal layer; 951. an electrode bridge; 96. a planarization layer; 97. a first compensation electrode; 98. a second compensation electrode; 101. touch wiring; 103. a functional device; 104. and connecting the wires.

Detailed Description

The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.

The invention aims to solve the technical problem that in the existing OLED display panel, due to the fact that the touch layer has a large influence on light transmission, photographing and imaging of photosensitive elements such as a camera under a screen can be influenced, and the corresponding area of the camera is difficult to realize that the corresponding area of the camera has a touch function and a light transmission function. The present invention can solve the above problems.

A display panel, as shown in FIG. 1, the display panel 10 includes a main display area 11 and a function addition area 12, at least a portion of the function addition area 12 being surrounded by the main display area 11.

The display panel 10 may be a full-screen display panel 10, the plurality of first pixels 121 are arranged in the function addition region 12, the plurality of second pixels 111 are arranged in the main display region 11, the main display region 11 may display an image, and the function addition region 12 may be disposed at any position of the display panel 10.

The function addition area 12 may be used for displaying an image, so that the display panel 10 may display a full screen display effect, and may also be used for installing a camera, an optical touch component, a fingerprint recognition sensor and other photosensitive elements, so as to improve user experience.

It should be noted that the pixel density in the function addition region 12 may be the same as or different from the pixel density in the main display region 11; for example, the pixel density of the function attachment area 12 is smaller than that in the main display area 11 to increase the light transmittance of the function attachment area 12.

It should be noted that the display brightness at the function addition region 12 may be the same as or different from the display brightness at the main display region 11, and the display brightness at the function addition region 12 and the display brightness at the main display region 11 may be adjusted by adjusting the driving current.

In one embodiment, each first pixel 121 includes a first red subpixel, a first blue subpixel, and a first green subpixel; each second pixel 111 includes a second red sub-pixel, a second blue sub-pixel, and a second green sub-pixel.

Specifically, as shown in fig. 2, the display panel 10 has a touch layer 90, the touch layer 90 is provided with an opening 91 corresponding to the function addition area 12, and the light transmittance of the touch layer 90 corresponding to the function addition area 12 is greater than the light transmittance of the touch layer 90 corresponding to the main display area 11.

Through set up trompil 91 with the position department that function appendant area 12 corresponds on touch-control layer 90, get rid of touch-control layer 90 and the part that function appendant area 12 corresponds to prevent that touch-control layer 90 from influencing photosensitive element such as camera and shooing and formation of image, function appendant area 12 both can be used for displaying images, make display panel 10 can present full screen display's effect, can be used for installing photosensitive element such as camera again, improve user experience.

It should be noted that the position design of the touch layer 90 in the display panel 10 is not limited, and the touch layer may be of an external type (i.e., the touch layer 90 is disposed on the cover glass of the display panel 10), an on-cell type (i.e., the touch layer 90 is disposed on the encapsulation layer), or an in-cell type (i.e., the touch layer 90 is disposed between the encapsulation layer and the thin film transistor layer).

It should be noted that the area of the opening 91 may be equal to the area of the functional addition region 12, and the area of the opening 91 may be smaller or larger than the area of the functional addition region 12.

In one embodiment, no touch trace 101 is disposed in the opening 91 of the touch layer 90.

It should be noted that, as will be known to those skilled in the art, the size of the general human finger and the general-purpose touch pen tip is about 4 square millimeters, and when the area of the opening 91 is smaller than the size of the general human finger and the general-purpose touch pen tip, the use experience of the user is slightly affected even if the opening 91 does not have a touch layer, and therefore, the user may select to set a touch function or not to set a touch function in the opening 91.

Further, when the area of the opening 91 of the touch layer 90 is less than or equal to 4 square millimeters, no touch trace 101 is disposed in the opening 91 of the touch layer 90.

The design of the touch wiring 101 is not performed at the position of the opening 91, and the interference and diffraction of light are reduced, so that the light penetration rate of the function additional area 12 can be improved, the photographing and imaging quality of photosensitive elements such as a camera is improved, the manufacturing process can be reduced, and the cost is saved.

In another embodiment, as shown in fig. 3, a touch trace 101 formed of a transparent conductive material is disposed in the opening 91 of the touch layer 90.

It is known to those skilled in the art that when the area of the opening 91 is larger than the size of a general human finger or a general-purpose touch pen tip, the user experience is easily reduced if the opening 91 has no touch function when the user uses the product to play a game or the like. And the high-transparency material is utilized to form the touch trace 101 at the opening 91, and the high-transparency material can reduce the interference and diffraction of the touch trace 101 to light, so that the opening 91 also has a touch function, the user experience is improved, and meanwhile, the touch trace 101 is prevented from influencing the display function and the light transmission function at the function additional area 12.

It should be noted that, in an actual implementation, whether to dispose the touch trace 101 at the opening 91 is related to the area of the opening 91 and also related to the display area of the display panel 10, and when the display area of the display panel 10 is large, whether to dispose the touch trace 101 at the opening 91 may be determined according to a ratio of the display areas of the opening 91 and the display panel 10 in an actual situation.

It should be noted that the transparent conductor material includes, but is not limited to, indium tin metal oxide, indium zinc metal oxide, fluorine tin metal oxide, or nano silver wire.

Under the condition that the opening 91 is provided with the touch trace 101, the touch trace 101 can be electrically connected to the touch layer 90, and the control circuit for controlling the touch layer 90 is used to control the touch trace 101 and the touch layer 90 at the same time, so that no additional control trace is required.

It should be noted that, under the condition that the touch trace 101 is disposed at the opening 91, a second control circuit for controlling the touch trace 101 may be further disposed on the display panel 10, and the second control circuit is electrically connected to the touch trace 101 through a transparent wire, so as to perform finer control on the touch trace 101 at the opening 91, and prevent the touch trace 101 and the touch layer 90 from affecting each other.

It should be noted that the touch layer 90 may be an infrared touch layer, a capacitive touch layer, a nano touch layer, or a resistive touch layer, and in the case that the touch trace 101 is disposed at the function addition region 12, the touch trace 101 may be formed by the same process as the touch layer 90 or by different processes; the touch trace 101 may be disposed on the same layer as the touch layer 90, or may be located on a different layer from the touch layer 90, so as to prevent the touch layer 90 and the touch trace 101 from interfering with each other.

As shown in fig. 4 and 5, in one embodiment, the shape of the opening 91 of the touch layer 90 is circular, large semicircular (as shown in fig. 4) or small semicircular (as shown in fig. 5).

When the diameter of the opening 91 of the touch layer 90 is smaller than or equal to 2 mm, no touch trace 101 is disposed in the opening 91 of the touch layer 90.

When the diameter of the opening 91 of the touch layer 90 is greater than 2 mm, a touch trace 101 made of a transparent conductor material is disposed in the opening 91 of the touch layer 90.

It should be noted that, in practical implementation, the opening 91 may also be in other shapes, such as an ellipse, a rectangle, a rounded rectangle, a regular or irregular polygon, which is not listed here.

It should be noted that, in this embodiment, in order to ensure that the light transmittance of the function-added area 12 can meet the lighting requirement of the photosensitive elements such as the camera, in addition to the above design performed on the touch layer 90, a specific design may be performed on the driving circuit and the signal traces in the function-added area 12, which have a certain light-shielding effect.

As shown in fig. 6 and 7, a first anode 1212 for driving the first pixel 121 is disposed in the function addition region 12, a plurality of first driving circuits 1211 and signal traces are disposed on the peripheral side of the function addition region 12, and the first driving circuits 1211 are electrically connected to the first anode 1212 through a transparent conductive wire.

A plurality of pixel driving circuit islands 30 are disposed on the periphery of the function addition region 12, a first group of pixel driving circuit islands 30 in the pixel driving circuit islands 30 includes a plurality of first driving circuits 1211, the signal trace includes a plurality of first signal lines 41 and a plurality of second signal lines 42, and the plurality of first signal lines 41 and the plurality of second signal lines 42 are electrically connected to the plurality of first driving circuits 1211.

The first driving circuit 1211 and the signal trace for driving the first pixel 121 are disposed on the periphery of the function addition region 12, so as to ensure that the pixel driving circuit island 30 is not required to be disposed in the function addition region 12, thereby preventing the first driving circuit 1211 and the signal trace from affecting the display and light transmission of the function addition region 12, and the first driving circuit 1211 is intensively distributed in an island shape, thereby further increasing the size and light transmission of the function addition region 12.

Note that the pixel driving circuit island 30 may drive the first pixels 121 in the function-added region 12, or may be responsible for driving a portion of the second pixels 111 in the main display region 11 close to the function-added region 12.

It should be noted that each of the pixel driving circuit islands 30 is formed by gathering a plurality of pixel driving circuits in an island shape, and the gathering is relatively dispersed compared to the pixel driving circuits in the conventional technology, that is, one pixel corresponds to one pixel driving circuit in the conventional technology. The pixel driving circuit includes a plurality of switching elements, which may be thin film transistors, diodes, or other devices, capacitors, signal lines, and the like.

Specifically, the first signal line 41 and the second signal line 42 are both electrically connected to the pixel driving circuit island 30, so as to input various electrical signals to the pixel driving circuit island 30; the pixel driving circuit island 30 is electrically connected to the first anode 1212 through a transparent wire to transmit an electrical signal to the first anode 1212.

The first signal line 41 may include at least one of a scan line, a light emitting signal line for controlling the organic light emitting diode to emit light, and a reset line for controlling the anode of the organic light emitting diode to be reset. Each of the first signal lines 41 includes a first straight line segment 411, a first detour segment 413, and a first transition segment 412.

Specifically, the display panel 10 further includes a plurality of first sectors 21 and a plurality of second sectors 22, where the first sectors 21 are defined by a plurality of first transition sections 412 arranged in a fan shape, and the second sectors 22 are defined by a plurality of second transition sections 422 arranged in a fan shape.

The plurality of first straight lines 411 are horizontally arranged in parallel, the first transition section 412 is located in the first sector 21, and the plurality of first transition sections 412 are distributed in a sector shape in the first sector 21. The first straight line segment 411 extends to the first sector area 21 and is electrically connected to the first transition segment 412, so that the plurality of first signal lines 41 are integrated into a plurality of groups of first signal lines 41, and the extending path of the plurality of groups of first signal lines 41 is changed to avoid the function-added area 12. The distance between two adjacent first transition sections 412 in the first sector 21 is smaller than the distance between two adjacent first straight line sections 411. In order to avoid short circuit caused by small distance between two adjacent first transition sections 412, the plurality of first transition sections 412 of the first sector 21 may be divided into at least two layers.

The first roundabout segments 413 of the plurality of first signal lines 41 are disposed at the edge of the function-added region 12, the first roundabout segments 413 are sequentially and electrically connected to all the pixel driving circuit islands 30 in the first group of pixel driving circuit islands 30, and the first roundabout segments 413 may be straight lines, arcs, or multiple broken line segments.

Specifically, the second signal line 42 may include a data line; each of the second signal lines 42 includes a second straight line segment 421, a second roundabout segment 423, and a second transition segment 422.

Wherein the second straight segments 421 of the second signal lines 42 are vertically arranged in parallel. The vertical projection of the plurality of first straight line segments 411 of the plurality of first signal lines 41 on the display panel 10 and the vertical projection of the plurality of second straight line segments 421 of the plurality of second signal lines 42 on the display panel 10 intersect perpendicularly with each other. The second transition segment 422 is located in the second sector 22, and a plurality of second transition segments 422 are fanned in the second sector 22. The second straight line segment 421 extends to the second sector 22 and is electrically connected to the second transition segment 422, so that the second signal lines 42 are integrated into a plurality of clusters of second signal lines 42, and the extending direction of the plurality of clusters of second signal lines 42 is changed to avoid the function-added area 12. The distance between two adjacent second transition sections 422 in the second sector 22 is smaller than the distance between two adjacent second straight line sections 421.

The second straight segments 421 of the second signal lines 42 are divided into a plurality of clusters and respectively extend to the second sectors 22 to electrically connect with the second transition segments 422. Each cluster of first straight segments 411 extends into a corresponding one of the second sectors 22. The plurality of second transition segments 422 are divided into clusters, and each cluster of second transition segments 422 is located in the same second sector 22. The second sectors 22 are symmetrically disposed on opposite sides of the function-added area 12 and are disposed close to the first meandering line. The second roundabout segments 423 of the plurality of second signal lines 42 are disposed at the edge of the function addition region 12. The second transition section 422 is electrically connected to the second roundabout section 423 one to one. The first roundabout segment 413 and the second roundabout segment 423 are located at different layers.

Wherein the first roundabout segment 413 and the second roundabout segment 423 are located in different layers, and the second roundabout segments 423 of the plurality of second signal lines 42 are disposed at the edge of the function addition region 12; two ends of each second roundabout segment 423 are electrically connected to a second transition segment 422, i.e. the second roundabout segment 423 is electrically connected to the second transition segment 422.

Further, the function addition region 12 is protruded or recessed corresponding to the edge of the first group of pixel driving circuit islands 30 at the edge of the first roundabout segment 413 to increase the light transmission area of the function addition region 12.

As shown in fig. 7, the display panel 10 further includes a plurality of connection lines 104, the connection lines 104 and the second roundabout segments 423 are located at different layers, each group of the second roundabout segments 423 includes at least two clusters of the second roundabout segments 423 with different lengths, and two ends of each cluster of the second roundabout segments 423 are electrically connected to two pixel driving circuit islands 30 in the first group of the pixel driving circuit islands 30 through the connection lines 104, respectively, so as to avoid that two adjacent clusters of the second roundabout segments 423 in the same group intersect to form a short circuit in the extending process in order to electrically connect to the pixel driving circuit islands 30.

As shown in fig. 8 and 9, the display panel 10 shown in fig. 8 is substantially similar to the display panel 10 shown in fig. 6, except that the second roundabout segments 423 of the second signal lines 42 are arranged in an arc shape.

Specifically, the second roundabout segment 423 of the second signal line 42 is arranged in an arc line, and at this time, the overall shape of the function addition region 12 is circular; the second roundabout segment 423 of the second signal line 42 is disposed in an elliptical arc, and the overall shape of the function-adding region 12 is elliptical.

As shown in fig. 10 and 11, the display panel 10 shown in fig. 10 is substantially similar to the display panel 10 shown in fig. 6, except that the second roundabout segment 423 of at least a part of the second signal line 42 is disposed around the whole function-added region 12.

Part of the pixel driving circuit islands 30 are uniformly arranged in a ring shape at the edge of the function addition region 12. The second roundabout segments 423 of the second signal lines 42 are disposed around the function-added region 12 and are electrically connected to at least a portion of the pixel driving circuit islands 30. The first roundabout segments 413 of the plurality of first signal lines 41 are sequentially electrically connected to any two adjacent pixel driving circuit islands 30 among the pixel driving circuit islands 30.

In the conventional technology, one pixel driving circuit is correspondingly disposed below each display sub-pixel, so that a plurality of pixel driving circuits corresponding to a plurality of display pixels are distributed dispersedly. By disposing a plurality of pixel driving circuit islands 30 formed by relatively concentrating pixel driving circuits at the periphery of the function addition area 12, the first driving circuits 1211 in the pixel driving circuit islands 30 are used to drive the plurality of first pixels 121 in the function addition area 12, so that the function addition area 12 is not provided with pixel driving circuits, thereby improving the light transmittance of the function addition area 12. The arrangement of the plurality of pixel drive circuit islands 30 also increases the size of the function addition area 12.

As shown in fig. 12, the display panel 10 includes a substrate 50 and at least two insulating layers disposed on the substrate 50, the first driving circuit 1211 is disposed on the substrate 50 and covered by the insulating layers, and the first driving circuit 1211 and the first anode 1212 are electrically connected through a transparent conductive wire disposed in the insulating layers.

Further, the transparent wire includes at least two layers of connecting traces located at different layers.

Further, a second driving circuit 1112 located in the main display area 11 is disposed on the substrate 50, and the second pixel 111 is electrically connected to the second driving circuit 1112 through a conductive layer located in an insulating layer.

In an embodiment, the display panel 10 includes a first driving circuit 1211 disposed on the substrate 50, a first insulating layer 61 covering the first driving circuit 1211, a first overlapping trace 71 disposed on the first insulating layer 61, a second insulating layer 62 covering the first overlapping trace 71, a second overlapping trace 72 disposed on the second insulating layer 62, a third insulating layer 63 covering the second overlapping trace 72, a third overlapping trace 73 disposed on the third insulating layer 63, a fourth insulating layer 64 covering the second overlapping trace 72, a pixel anode disposed on the fourth insulating layer 64, and a pixel defining layer 80, wherein the pixel defining layer 80 has a pixel opening 81 corresponding to the pixel anode.

The lapping wires positioned in the function adding area 12 are transparent wires; the overlapping traces on different layers are electrically connected through the via holes, and the electrical connection between the first anode 1212 and the first driving circuit 1211 is realized through the electrical connection of the overlapping traces on different layers, so that the wiring arrangement is facilitated.

Specifically, the distance between two adjacent overlapping wires on the same layer is greater than 2 microns, so as to avoid short circuit between two adjacent overlapping wires on the same layer; the line width of each lapping routing is larger than 1 micron.

The pixel anode includes a first anode 1212 and a second anode 1111 for driving the second pixel 111, the second anode 1111 is located in the main display region 11, the conductive layer may be the same as the transparent conductive line in structure and manufacturing process, and the second anode 1111 is electrically connected to the second driving circuit 1112 through a multi-layer bonding trace.

It should be noted that, in practical implementation, the conductive layer may also be formed by multiple layers of opaque conductive traces located in the main display area 11, that is, the overlapping trace located in the main display area 11 is an opaque conductive trace.

It should be noted that fig. 12 only illustrates the case that the first anode 1212 is electrically connected to the first driving circuit 1211 through the bonding trace located in the function addition region 12, in an actual implementation, the first anode 1212 may also be electrically connected to the first driving circuit 1211 through the bonding trace in the main display region 11.

It should be noted that fig. 12 only illustrates the case of having three layers of overlapping traces, and in practical implementation, two, four, five or more layers of overlapping traces may also be provided.

It should be noted that, the transparent conducting wire is made of materials including, but not limited to, indium tin metal oxide, indium zinc metal oxide, fluorine tin metal oxide, or nano silver wire; the insulating layer is made of a transparent material, and the insulating layer includes, but is not limited to, silicon oxide or silicon nitride.

As shown in fig. 13 and 14, when no touch trace 101 is disposed in the opening 91 of the touch layer 90, the touch layer 90 includes a first metal layer 93 and a second metal layer 95 located at a different layer from the first metal layer 93.

Specifically, the first metal layer 93 includes a first touch line disposed along a first direction and a second touch line disposed along a second direction, the first touch lines are arranged along the second direction and insulated from each other, and the second touch lines are arranged along the first direction and insulated from each other.

Each of the first touch lines includes a plurality of first electrodes 931 arranged along a first direction, each of the second touch lines includes a plurality of second electrodes 932 arranged along a second direction, and the first electrodes 931 and the second electrodes 932 are insulated from each other.

It should be noted that the first direction may be a transverse direction, and the second direction may be a longitudinal direction, that is, the touch layer 90 includes a plurality of first electrodes 931 arranged along the transverse direction and a plurality of second electrodes 932 arranged along the longitudinal direction.

Specifically, the second metal layer 95 includes an electrode bridge 951; in each of the first touch lines, two adjacent first electrodes 931 are electrically connected through the electrode bridge 951; in each of the second touch lines, two adjacent second electrodes 932 are electrically connected through an electrode connection 933.

It can also be understood that all the first electrodes 931 on the same straight line are electrically connected through the electrode bridge 951 in sequence to form the first touch line; all the second electrodes 932 on the same straight line are electrically connected in sequence through the electrode connection line 933 of the same layer to form the second touch line. In fig. 13, the lateral direction is represented by the X-axis direction, and the longitudinal direction is represented by the Y-axis direction.

It should be noted that the electrode connection line 933 and the electrode bridge 951 are located at different layers, so as to avoid short circuit between the electrode connection line 933 and the electrode bridge 951; the electrode connection 933 may be disposed on the same layer as the second electrode 932 and patterned from the first metal layer 93, or the electrode connection 933 may be disposed on a different layer from the second electrode 932, such as above or below the first metal layer 93.

Specifically, the electrode bridge 951 is located outside the opening to prevent the opening 91 formed in the touch layer 90 from being disconnected between two adjacent first electrodes 931 or/and two adjacent second electrodes 932, so as to ensure that each first touch line and each second touch line are in a through state, thereby ensuring the touch function of the touch layer 90.

In the preparation process of the display panel, after the touch layer 90 is formed, the opening 91 is formed in the touch layer 90, and a preset area of the opening 91 formed in the touch layer 90 is not overlapped with any of the electrode bridge 951.

Wherein, the maximum width of the opening 91 is smaller than the distance between two adjacent electrode bridge 951, so as to prevent the opening 91 from being too large to cause the opening 91 to extend to the electrode bridge 951.

It is understood that when the opening 91 is circular, the diameter of the opening 91 is smaller than the distance between two adjacent electrode bridges 951; when the opening 91 is oval, the length of the long axis of the opening 91 is smaller than the distance between two adjacent electrode bridge 951; when the opening hole 91 is square, the length of the longest side of the opening hole 91 is smaller than the distance between two adjacent electrode bridge 951.

Specifically, a bridge-spanning node is formed at the intersection of the electrode connection line 933 and the electrode bridge-spanning 951, that is, an overlapping portion of the electrode connection line 933 and the electrode bridge-spanning 951 forms a bridge-spanning node, and the diameter of the opening 91 may also be set to be smaller than the distance between two adjacent bridge-spanning nodes.

Specifically, the opening 91 is located in an area surrounded by a first electrode bridge, a second electrode bridge, a third electrode bridge, and a fourth electrode bridge of the plurality of electrode bridges 951.

The second electrode bridging bridge is adjacent to the first electrode bridging bridge and located on the side of the first electrode bridging bridge along the first direction, the third electrode bridging bridge is adjacent to the first electrode bridging bridge and located on the side of the first electrode bridging bridge along the second direction, and the fourth electrode bridging bridge is simultaneously adjacent to the second electrode bridging bridge and the third electrode bridging bridge.

It can be understood that the first electrode bridge, the second electrode bridge, the third electrode bridge and the fourth electrode bridge may be 4 electrode bridges 951 at any position in the touch layer 90, and the 4 electrode bridges 951 are adjacently disposed and respectively located at four positions, i.e., up, down, left and right; the position of the opening 91 is set to avoid the opening between two adjacent first electrodes 931 and/or between two adjacent second electrodes 932 when the opening 91 is formed.

In one embodiment, the touch layer 90 further includes a buffer layer 92, a passivation layer 94, and a planarization layer 96.

Wherein the first metal layer 93 is disposed on the buffer layer 92; the passivation layer 94 is disposed on the first metal layer 93, and the passivation layer 94 is made of an inorganic material to function as an insulating medium, and the inorganic material may be, but is not limited to, a flexible material such as SiN and SiON. The second metal layer 95 is disposed on the passivation layer 94; the flat layer 96 is disposed on the second metal layer 95, the flat layer 96 is made of an organic material, which can function as an insulating medium and has good flexibility, and the organic material may be, but is not limited to, polymethyl methacrylate (PMMA), epoxy resin, phenolic resin, acrylate resin, methacrylic resin, and the like.

Fig. 14 only illustrates a case where the first metal layer 93 is located above the second metal layer 95, and it should be noted that the first metal layer 93 may be located below the second metal layer 95.

As shown in fig. 15 and 16, a plurality of first edge electrodes 934 uniformly arranged in a convex shape are disposed at an edge position of the first electrode 931, a first spacing area 935 is disposed between two adjacent first edge electrodes 934, a plurality of second edge electrodes 936 uniformly arranged in a convex shape are disposed at an edge position of the second electrode 932, a second spacing area 937 is disposed between two adjacent second edge electrodes 936, the first edge electrodes 934 are disposed in the second spacing area 937, and the second edge electrodes 936 are disposed in the first spacing area 935.

Specifically, among the plurality of first electrodes 931, the first electrode 931 adjacent to the opening 91 is electrically connected to a first compensation electrode 97, and the first compensation electrode 97 is disposed along an outer edge of the opening 91; among the plurality of second electrodes 932, the second electrode 932 adjacent to the opening 91 is electrically connected to a second compensation electrode 98, and the second compensation electrode 98 is disposed along an outer edge of the opening 91.

The two first compensation electrodes 97 are insulated from each other to avoid short circuit between two adjacent first touch lines; the two second compensation electrodes 98 are insulated from each other to avoid short circuit between two adjacent second touch control lines; the first compensation electrode 97 and the second compensation electrode 98 are insulated from each other to prevent the first electrode 931 from being shorted with the second electrode 932.

It is understood that when the opening 91 is formed on the touch layer 90, the portions of the first electrode 931 and the second electrode 932 adjacent to the opening 91 are removed, the smaller the areas of the first electrode 931 and the second electrode 932 are, the smaller the corresponding touch capacitance is, i.e., the touch sensitivity is, and the area of the first electrode 931 is increased by disposing the first compensation electrode 97, and the area of the second electrode 932 is increased by disposing the second compensation electrode 98, so that the touch sensitivity of the first electrode 931 and the second electrode 932 adjacent to the opening 91 can be increased.

In an embodiment, two of the first electrodes 931 and two of the second electrodes 932 adjacent to the opening 91 have a portion removed by the opening 91, at this time, two of the first electrodes 931 are electrically connected to the first compensation electrode 97, and two of the second electrodes 932 are electrically connected to the second compensation electrode 98, so as to ensure that the opening 91 does not affect the touch function of the touch layer 90, and increase the area of the opening 91, so as to ensure that the light transmittance of the function addition area 12 can meet the lighting requirement of the photosensitive element such as the camera.

It should be noted that, without being limited to the above arrangement, in the two first electrodes 931 and the two second electrodes 932 adjacent to the opening 91, only a portion of one of the first electrodes 931 or/and the second electrodes 932 may be removed by the opening 91, only a portion of two of the first electrodes 931 or two of the second electrodes 932 may be removed by the opening 91, only a portion of one of the first electrodes 931 and two of the second electrodes 932 may be removed by the opening 91, and similarly, portions of two of the first electrodes 931 and one of the second electrodes 932 may be removed by the opening 91; the removed portion of the first electrode 931 is electrically connected to the first compensation electrode 97, and the removed portion of the second electrode 932 is electrically connected to the second compensation electrode 98.

It is understood that the area of the first electrode 931 adjacent to the opening 91 is inversely related to the distance from the center or midpoint of the first electrode 931 to the center of the opening 91; the area of the second electrode 932 adjacent to the opening 91 is inversely related to the distance from the center or midpoint of the second electrode 932 to the center of the opening 91.

In the first electrode 931 and the second electrode 932 adjacent to the opening 91, when the first electrode 931 is electrically connected to the first compensation electrode 97, a distance from a center or a middle point of the first electrode 931 to a center of the opening 91 is in positive correlation with an area of the first compensation electrode 97; when the second electrode 932 is electrically connected with the second compensation electrode 98, the distance from the center or the middle point of the second electrode 932 to the center of the opening 91 is positively correlated with the area of the second compensation electrode 98; the mutual capacitance of the first electrode 931 and the second electrode 932 can be prevented from being greatly different, so that the overall mutual capacitance is more uniform.

For example, the two first electrodes 931 and the two second electrodes 932 adjacent to the opening 91 have portions removed from the opening 91, and a center P point of an area surrounded by the first electrode bridge, the second electrode bridge, the third electrode bridge, and the fourth electrode bridge is not coincident with a center O point of the opening 91.

Referring to fig. 15, if the point O is shifted to the lower right with respect to the point P, the area of the first electrode 931 on the lower side is larger than the area of the first electrode 931 on the upper side, and the area of the first compensation electrode 97 connected to the first electrode 931 on the lower side is larger than the area of the first compensation electrode 97 connected to the first electrode 931 on the upper side, so as to compensate the area of the first electrode 931 on the lower side as much as possible, thereby avoiding a large difference between the areas of the first electrodes 931 on the upper and lower sides, and effectively improving the touch sensitivity at the edge of the opening 91.

Referring to fig. 16, the area of the second electrode 932 on the right side is cut off larger than the area of the second electrode 932 on the left side, and the area of the second compensation electrode 98 connected to the second electrode 932 on the right side is larger than the area of the second compensation electrode 98 connected to the second electrode 932 on the left side, so as to compensate the area of the second electrode 932 on the right side as much as possible, avoid a large difference between the areas of the second electrodes 932 on the left and right sides, and effectively improve the touch sensitivity at the edge of the opening 91.

In an embodiment, the center of the region surrounded by the first electrode overpass, the second electrode overpass, the third electrode overpass and the fourth electrode overpass coincides with the center of the circle of the opening 91, and the removal areas of the two first electrodes 931 and the two second electrodes 932 adjacent to the opening 91 are the same, so that the overall mutual capacitance value is uniform.

Specifically, the first compensation electrode 97 may be disposed around the opening 91 in a circular arc shape, and the second compensation electrode 98 may also be disposed around the opening 91 in a circular arc shape, so as to increase the areas of the first compensation electrode 97 and the second compensation electrode 98.

Specifically, the first metal layer 93 is in a grid shape, and the first electrode 931 and the second electrode 932 may also be in a grid shape.

The first compensation electrode 97 and the second compensation electrode 98 may be both in a grid shape, the first compensation electrode 97 and the second compensation electrode 98 may also be in a grid shape, and the first compensation electrode 97 and the second compensation electrode 98 may also be in a solid shape.

It should be noted that the first compensation electrode 97 and the second compensation electrode 98 may be disposed on the same layer as the first metal layer 93 and formed by the same etching process, and the first compensation electrode 97 and the second compensation electrode 98 may also be located on different layers from the first metal layer 93.

Based on the display panel 10, the present invention further provides a display apparatus, as shown in fig. 17, including the display panel 10 and a functional device 103 disposed corresponding to the function addition region 12 of the display panel 10.

The functional device 103 may be a camera, an optical touch component, a fingerprint sensor, or other photosensitive elements.

The invention has the beneficial effects that: through getting rid of the touch-control layer 90 and the part that additional function district department corresponds, avoid touch-control layer 90 to influence the shooting and the formation of image of photosensitive element such as camera, confirm whether set up touch-control line 101 in trompil 91 department according to the area of trompil 91 simultaneously, when trompil 91 area is less, touch-control line is not set up in touch-control layer 90 trompil 91 department, when the area of trompil 91 is great, utilize highly transparent conductor material to form touch-control line 101, make trompil 91 department have the touch-control function, and function additional district 12 also can be used for displaying images and installing photosensitive element such as camera, improve user experience.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims (15)

1. The display panel is characterized by comprising a touch layer, a main display area and a function additional area, wherein the main display area is arranged on the touch layer;

the touch layer is provided with openings corresponding to the function additional areas, and the light transmittance of the touch layer corresponding to the function additional areas is greater than that of the touch layer corresponding to the main display area;

the touch layer comprises a first metal layer and a second metal layer which is different from the first metal layer in layer;

the first metal layer comprises first touch control lines arranged along a first direction and second touch control lines arranged along a second direction, the first touch control lines are arranged along the second direction and are insulated from each other, and the second touch control lines are arranged along the first direction and are insulated from each other; each first touch line comprises a plurality of first electrodes arranged along a first direction, each second touch line comprises a plurality of second electrodes arranged along a second direction, and the first electrodes and the second electrodes are insulated from each other;

the second metal layer comprises an electrode bridge; in each first touch line, two adjacent first electrodes are electrically connected through the electrode bridge; in each second touch line, two adjacent second electrodes are electrically connected through an electrode connecting line, and the electrode bridge is positioned on the outer side of the opening

Two first electrodes and two second electrodes adjacent to the open hole are partially removed by the open hole, the first electrodes are electrically connected with first compensation electrodes, and the second electrodes are electrically connected with second compensation electrodes;

the distance from the center or the middle point of the first electrode to the circle center of the opening hole is positively correlated with the area of the first compensation electrode, and the distance from the center or the middle point of the second electrode to the circle center of the opening hole is positively correlated with the area of the second compensation electrode.

2. The display panel of claim 1, wherein no touch trace is disposed in the opening of the touch layer.

3. The display panel according to claim 2, wherein the maximum width of the opening is smaller than the distance between two adjacent electrodes across the bridge.

4. The display panel according to claim 2, wherein the opening is located in a region surrounded by a first electrode bridge, a second electrode bridge, a third electrode bridge, and a fourth electrode bridge among the plurality of electrode bridges;

the second electrode bridging bridge is adjacent to the first electrode bridging bridge and located on the side of the first electrode bridging bridge along the first direction, the third electrode bridging bridge is adjacent to the first electrode bridging bridge and located on the side of the first electrode bridging bridge along the second direction, and the fourth electrode bridging bridge is simultaneously adjacent to the second electrode bridging bridge and the third electrode bridging bridge.

5. The display panel according to any one of claims 3 to 4, wherein a first compensation electrode is electrically connected to the first electrode adjacent to the opening among the plurality of first electrodes, the first compensation electrode being provided along an outer edge of the opening; and a second compensation electrode is electrically connected to the second electrode adjacent to the opening hole, and is arranged along the outer edge of the opening hole.

6. The display panel according to claim 5, wherein the first compensation electrode and the second compensation electrode are disposed on the same layer as the first metal layer, the first metal layer is in a grid shape, and the first compensation electrode and the second compensation electrode are in a grid shape.

7. The display panel of claim 2, wherein when the area of the opening of the touch layer is less than or equal to 4 square millimeters, no touch trace is disposed in the opening of the touch layer.

8. The display panel of claim 2, wherein when the diameter of the opening of the touch layer is less than or equal to 2 mm, no touch trace is disposed in the opening of the touch layer.

9. The display panel according to claim 8, wherein the shape of the opening of the touch layer is circular, large semicircular or small semicircular.

10. The display panel according to claim 1, wherein the opening of the touch layer is provided with a touch trace formed of a transparent conductive material.

11. The display panel of claim 10, wherein the touch trace is electrically connected to the touch layer.

12. The display panel according to claim 1, wherein a first driving circuit and a signal trace are disposed on a peripheral side of the function addition region, a first anode for driving a first pixel is disposed in the function addition region, and the first driving circuit is electrically connected to the first anode through a transparent wire.

13. The display panel according to claim 12, wherein a plurality of pixel driving circuit islands are disposed on a peripheral side of the function addition region, a first group of the pixel driving circuit islands in the pixel driving circuit islands includes a plurality of first driving circuits, the signal trace includes a plurality of first signal lines and a plurality of second signal lines, and the plurality of first signal lines and the plurality of second signal lines are electrically connected to the plurality of first driving circuits.

14. The display panel according to claim 13, wherein each of the first signal lines comprises a first bypass segment, each of the second signal lines comprises a second bypass segment, the first bypass segment and the second bypass segment are located in different layers, the first bypass segment of the plurality of first signal lines is disposed at an edge of the function addition region, and the second bypass segment of the plurality of second signal lines is disposed at an edge of the function addition region.

15. A display device characterized by comprising the display panel according to any one of claims 1 to 14 and a function device provided in correspondence with a function addition region of the display panel.

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